Neutral Ionic Liquid [hmim]Br as a Green Reagent and Solvent for the Mild and Efficient Dehydration of Benzyl Alcohols into (<i>E</i>)-Arylalkenes Under Microwave Irradiation
作者:Rakesh Kumar、Abhishek Sharma、Naina Sharma、Vinod Kumar、Arun K. Sinha
DOI:10.1002/ejoc.200800657
日期:2008.11
A mild and efficient, ionic-liquid-assisted, green protocol for the dehydration of benzyl alcohols into the corresponding (E)-arylalkenes under microwave irradiation has been developed. The method utilizes a neutral and recyclable ionic liquid (1-hexyl-3-methylimidazolium bromide) as a reagent and solvent to cleanly provide a wide range of olefins withoutthe need of harsh and expensive Bronsted/Lewis
已经开发了一种温和高效、离子液体辅助的绿色方案,用于在微波辐射下将苄醇脱水成相应的 (E)-芳基烯烃。该方法利用中性和可回收的离子液体(1-己基-3-甲基咪唑溴化物)作为试剂和溶剂,清洁地提供范围广泛的烯烃,而无需苛刻且昂贵的布朗斯台德/路易斯酸。该方法扩展到将苯甲醇的乙酰化/苯甲酰化衍生物有效转化为其相应的 (E)-芳基烯烃。(© Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2008)